The European Space Agency's (ESA) Euclid telescope was launched on July 1 last year. It is named after the ancient Greek mathematician Euclid. Its orbital position is the Lagrange L2 point between the sun and the earth, 1.6 million kilometers from the earth. Its mission is to map the large-scale distribution structure of dark matter in the universe and confirm the nature of dark energy. The telescope has a diameter of 1.2 meters and mainly observes the universe in near-infrared wavelengths. Astronomers used the telescope to discover dozens of rogue planets in the Orion Nebula, that is, they have no parent star. The first scientific results came from just 24 hours of observation. It observed 11 million celestial bodies in visible light and 5 million celestial bodies in infrared light. The rogue planets it discovered are only 3 million years old, very young on a cosmic scale, and at least 4 times the size of Jupiter. The telescope identified them by the heat they emit, and they will continue to wander unless they are captured by nearby stars. Astronomers have discovered rogue planets before, but not on such a large scale this time.
https://www.theguardian.com/science/article/2024/may/23/euclid-telescope-rogue-planets-floating-free-milky-way
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